Fire-proof composition tor safes



PATENT ()EFICE.

'I'IIUSIAH (llfllNl'ZY, ()l" (IHI'ILSI'ZA, AHSACHUHI'IT'IS.

FIRE-PROOF COMPOS ITlON FOR SAFES, 81.0.

SPECIFICATION forming part of Letters Patent. No. 259,532, dated June13, 1882.

Applirltion Illrd Marth 1.1, I?

- To all whom it may] concern:

Hn it known that l, 'lnon/ts Hensm', of helsea, in the countyot'flutl'olk, ol' the State of .Iassachusetts, have invented a new amluseful Improvement, in Firclroof Compositions for Hates, &c.; and I dohereby declare the same to be. described as follows, viz:

'l'be co|n msition constituting my mid in vention consists of twentyparts (by weight) of the material termed diatomic orinfusolial earth;nine parts (by weight) of silica, nilicatos, or silicieaeid; tireparts(by weight) ol'asbestus; twopnrts (by weight) olsnlphuric aciddiluted with sixteen parts (by weight) of water; one part (by weight) oftire-clay.

'l'hu infnsorial earth should be thoroughly mixed with the acidsolution,uud duringtnenty [on hours the mixture should be occasionallyagitated or stirred, after which the silica,

asbestos, and lire-clay are to be added with snllleicnt water to bringthe whole into a molding or plastic state.

This conqmsition may be employed to advantage in tho lnalnli'neture ol'tlro-prool'sal'es or hoxea, or various other structures required to berendered lire resisting ot tire proof.

I do not. eoullno my invention to the preeiso pnumrllons, usbereinls-tbm stated, of its iii- 1; gredlents, as such may he noluen'lmtvaried uithout changing the character of the eoniponitiou. l'teparatoryto being used for some purposes it. may be baked or lndurated by heat.

lu'onld further remark that l am aware (Sn pm imnu that it. is not newto make for tire-plant sales 5 a wall-filling: consisting of ehalk,clay, sawdust, and silicate of soda; also, that. it is not new to make abox of LNNNUH! board, and to apply to the joints and corners thereof acement composed of s licate of soda in solution with silicate 0tmagnesia. I am also aware that it is not new to saturate asbestus boardwith si ate oi sodaf aml to rub talc or altitude of magnesia on thesurface at such board so saturated, all of which ditlers materially frommy invcntiotnas I employ in themakiug of my composition int'nsorialearth, and with the silica, nsbestns, and tire-clay I use a solution ofsulphuric acid, which serves to connect the. several ingredients and toso modify the intusorial earth as to render it incomlmstihle.Furthermore, as the asbestos is in a tibrous condition, it, besidesbeing lire-resisting, holds together very strongly the clay nmliutnsorial earth, the solution being used also as a bindiug element withthe clay, and operates to greatly indnrate tho (muniosition when it isdried.

What I claim as my invention is- I 'lbu lire-resisting compositionsubstantially ti as deseribed, eonsisting of iul'usorial earll|,, silicausbestus, diluted sulphuric acid, and Ih'eulay, mixed or combinedessentially as set tin'tln-

